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A method for constructing a foundation pit

A construction method and foundation pit technology, applied in construction, excavation, foundation structure engineering, etc., to achieve the effects of good water resistance, environmental protection, and small changes

Active Publication Date: 2020-11-27
MAANSHAN MCC17 ENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above applications have made certain optimizations in the stability and waterproof performance of foundation pit construction, but there is still room for improvement

Method used

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  • A method for constructing a foundation pit
  • A method for constructing a foundation pit
  • A method for constructing a foundation pit

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] Such as figure 1 As shown, a kind of foundation pit construction method of the present embodiment comprises the following steps:

[0056] a. Determine the construction location, set positioning piles around the required construction, and install guide frames between the positioning piles;

[0057] b. The foundation pit is preliminarily formed through excavation, and protective devices are installed on the pit wall of the foundation pit;

[0058] c. Pump out the accumulated water inside the foundation pit, and install supporting devices in the foundation pit;

[0059] d. Bury the casing in the foundation pit, and drill the pile holes by means of circular drilling construction, and clean up the residual mud in the pile holes by pumping;

[0060] e. Set the support column in the pile hole, and pour concrete to fix the support column by the pump truck;

[0061] f. Use the cushion manufacturing system to manufacture the cushion, place the cushion in the foundation pit, an...

Embodiment 2

[0068] A foundation pit construction method in this embodiment is basically the same as that in Embodiment 1. Further, the fixing unit 200 of the foundation pit support device in this embodiment includes a bracket 210 for clamping the sheet pile 100, a steel bar 220 and a spine Claw 230, such as image 3 As shown, the two ends of the steel bar 220 are respectively symmetrically provided with brackets 210, and the sheet pile 100 is clamped between the brackets 210 at both ends. Set on the base 211, the inner side of the base 211 is provided with at least two annular grooves 215 matching the shape of the sheet pile 100, specifically two annular grooves 215, and in this embodiment, a wave-like extending The structure of the sheet pile 100, there is a certain overlap area between two adjacent sheet piles 100, and the fixing unit 200 is set in the overlap area to connect them, and the annular grooves 215 on both sides are just clamped on the sheet pile 100. On the inner and outer ...

Embodiment 3

[0073] A method for constructing a foundation pit in this embodiment is basically the same as the above-mentioned embodiment, furthermore, the water collection control valve 170 of the foundation pit support device in this embodiment includes an inner cylinder 172, a connecting rod 174 and a sealing ring 173, Such as Figure 7As shown, a cavity is provided in the inner cylinder 172 and a horizontal flat plate 176 is arranged in the cavity of the inner cylinder 172. The flat plate 176 divides the inner cavity of the inner cylinder 172 into an upper cavity 175 and a lower cavity 178. The plate 176 is provided with a third through hole 177 connecting the upper cavity 175 and the lower cavity 178, and the connecting rod 174 is inserted into the third through hole 177. Specifically, the plate 176 can be provided with a plurality of third through holes 177, A third through hole 177 with a larger diameter is defined in the middle of the plate 176 for the connecting rod 174 to pass th...

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Abstract

The invention discloses a construction method for a foundation pit, and belongs to the field of construction engineering. The construction method for the foundation pit comprises the following steps of; a. Determining a construction position, setting positioning piles around the construction, and installing a guiding frame among the positioning piles; b. Initially forming the foundation pit by excavation, and arranging a guard device on the pit wall of the foundation pit; c. Pumping and draining the water accumulated in the foundation pit, and arranging a supporting device in the foundation pit; d. Burying a pile casing in the foundation pit, and drilling pile holes by means of circulating drilling construction, and cleaning the residual mud in the pile holes by means of slurry pumping; e.Arranging supporting columns the pile holes, and pouring concrete by a pump truck to fix the supporting columns; f. Manufacturing a cushion layer by a cushion layer manufacturing system, placing thecushion layer in the foundation pit, and connecting the cushion layer with the supporting columns. The foundation pit formed by the above construction method has good stability, and can effectively solve the drainage problem when the water is stored at the bottom, and the whole construction method has strong practicability and simple operation.

Description

technical field [0001] The invention relates to the technical field of construction engineering, and more specifically, relates to a foundation pit construction method. Background technique [0002] The foundation pit refers to the space below the ground excavated for the construction of the building foundation and basement. The foundation pit is a temporary project, and its function is to provide a space so that the foundation masonry can be carried out according to the position specified by the design. The first thing to pay attention to when excavating the foundation pit is the stability of the foundation pit and the waterproof and drainage work. In addition, the cushion in the foundation pit is used as a temporary project. How to solve the stability and drainage problems of the foundation pit is an urgent problem to be solved at present. [0003] After searching, a large number of patents have been published on the development of foundation pits and related technologies...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E02D17/02E02D17/04E02D19/00
CPCE02D17/02E02D17/04E02D19/00
Inventor 杨大兵王孝平陈家骐雷团结段涛曹顺
Owner MAANSHAN MCC17 ENG TECH CO LTD
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